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IRS-PEC

Elucidating the water photo-oxidation mechanism by infrared spectroscopy

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 IRS-PEC project word cloud

Explore the words cloud of the IRS-PEC project. It provides you a very rough idea of what is the project "IRS-PEC" about.

mechanism    electrode    initiate    operando    internal    cell    energy    electron    activation    pec    reaction    photoelectrode    energies    oxide    infrastructure    photocatalytic    renewable    input    solid    hole    potentials    thereby    densities    surfaces    interface    unexplored    hereto    place    fundamental    intermediate    sensitivity    sites    relaxing    device    exact    models    fast    species    water    surface    bias    multiple    groups    constraints    oxidation    freezing    undesired    versatile    ph    nature    engineer    function    largely    simultanously    measured    recombination    voltage    photocurrents    trapping    spectroscopy    act    pillars    photoelectrochemical    operation    material    delivered    residing    disclosed    occurring    additionally    clean    quantified    simulations    density    speed    sunlight    liquid    metal    onset    substrate    area    gain    half    reflection    infrared    tool    hydrogen    critical    electrolyte    actual    drawn    constructed    splitting    convert    reactions    oxidative    fuel   

Project "IRS-PEC" data sheet

The following table provides information about the project.

Coordinator
STICHTING NEDERLANDSE WETENSCHAPPELIJK ONDERZOEK INSTITUTEN 

Organization address
address: WINTHONTLAAN 2
city: UTRECHT
postcode: 3526 KV
website: www.fom.nl

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Netherlands [NL]
 Project website https://www.differ.nl/research/emi
 Total cost 165˙598 €
 EC max contribution 165˙598 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-02-01   to  2019-01-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    STICHTING NEDERLANDSE WETENSCHAPPELIJK ONDERZOEK INSTITUTEN NL (UTRECHT) coordinator 165˙598.00

Map

 Project objective

Hydrogen is a highly versatile fuel that is believed to become one of the key pillars to support our future energy infrastructure. A clean and renewable method to produce hydrogen is to use sunlight to convert water into hydrogen in a photoelectrochemical (PEC) cell. The exact mechanism of this photocatalytic water splitting remains a largely unexplored area. In this project, I will provide insight into the more challenging oxidative half-reaction occurring at metal-oxide surfaces. To gain insight into the oxidative half-reaction, surface groups residing at the solid/liquid interface will be measured by infrared spectroscopy during actual device operation. Hereto, a PEC cell will be constructed with a multiple internal reflection element as key component; it will ensure a high sensitivity while simultanously act as substrate for the working electrode. The novel approach to apply a bias voltage allows for photoelectrochemical analysis, but also allows ‘freezing’ of the surface species thereby relaxing the constraints of a fast measurement speed. From in operando measurements the density and nature of surface groups present at a well-defined metal-oxide surface will be obtained as a function of electrolyte pH. With this knowledge conclusions can be drawn on which surface sites initiate the oxidation reaction, which groups present sites where (intermediate) reactions with high activation energies take place, and where undesired hole-trapping and electron-hole recombination are most likely to occur. Thereby providing fundamental insight into the water oxidation mechanism, which is required to engineer a photoelectrode material with high photocurrents and low onset potentials. Additionally, the quantified information on surface species densities is much-needed input in models and simulations. Furthermore, a tool will be delivered with which the critical steps in the oxidation reaction can be disclosed as a function of pH.

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The information about "IRS-PEC" are provided by the European Opendata Portal: CORDIS opendata.

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